Most Expensive Home Sale Ever?

Russian billionaire Yuri Milner, a key stockholder in new media social networking and marketing companies like Facebook and Groupon, has added a new high profile investment to his portfolio.

Mr. Milner, a 1990s graduate of the Wharton School of Business, is officially the proud new owner of the most expensive home in the United States.

The $100 million property, located in Los Altos Hills, California, in Silicon Valley is a true marvel. The French-inspired chateau measures a staggering 25,500 square feet, replete with all the amenities that a young mogul (Milner is just 49 years old) and his family could desire.

Here's a short list of the property's fantastic features:

Indoor and outdoor pools

Full-size ballroom

18-acre hilltop site with panoramic views of the San Francisco Bay

Home theater

Full-service spa and gym

This list might have you wondering if Milner purchased a home or a luxury hotel, but believe it or not, with all that space, the property has a mere five bedrooms. In other words, this could be the most expensive five-bedroom home sale ever.

The Wall Street Journal notes that the luxury purchase stands in contrast to the fortunes of middle-class home sellers. While the affluent market has not been immune to falling prices, we already know that the sector is far more insulated from the kind of turbulence that the majority of homeowners have experienced.

The Journal quotes Cristina Condon, a real-estate agent at Sotheby's International in Palm Beach, Florida as observing, "The crummy real estate market is not in the high end. It's only in the lower end and the middle."

The home's previous owners, Fred and Annie Chan, only finished developing the property in 2009. The home was slated to be their primary residence until business recalled the power couple to Oahu, Hawaii, where they own a 5.4-acre, $80 million oceanfront estate. Mr. Chan, the founder of PC audio solutions company ESS Technology, is returning to the islands to oversee additional real estate holdings and an educational foundation.

If you paid $100 million dollars for a spectacular new house, wouldn't you want to move in right away? Here's the kicker: According to Time Magazine, Mr. Milner, who currently resides in Moscow with his family has "no plans to move anytime soon, according to his spokesman." So for now, think of the big behemoth as just as a really nice vacation home.

If you had $100 million to spare, would you buy this estate?More on MoneyWatch:

Ilyce R. Glink is an award-winning, nationally-syndicated columnist, best-selling book author and founder of Best Money Moves, an employee benefit program that helps reduce financial stress. She also owns ThinkGlink.com, where readers can find real estate and personal finance resources.